Skip the auto shop - Our mechanics make house calls

Q: AC leak on a 2008 Prius

asked by on

My wife has 2008 Prius and has an AC leak but I don't know where exactly. Where can I start to look to find the leak? What part is a usual culprit that starts to leak AC fluid?

A: Understand that's a Prius and that car ...

Understand that's a Prius and that car has an AC compressor that works on hundreds of volts electricity. It's an electric compressor. It uses special fluids, too. You can't use the regular AC fluid as it will short it out. You've got to find somebody who really knows how to work on those things. They are going to use a sniffer to find where the leak is coming from.

On other cars, I can say that you can put a UV leak dye in, but UV leak dye can short out those electric compressors. So you can't do that. You've got to use the sniffer. I'm a mechanic and I have one. They can come with a sniffer and they can check all around to see where the leak is coming from and then go from there. Unfortunately for you, the most common leak I see on those is the electric compressor. It's kind of a design flow, and they cost a fortune to replace on those Prius. I've had a lot of customers and they just fill it up once or twice a year and they last long enough to just keep doing that rather than spending a fortune on that expensive compressor.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car does not go into drive

Hello. A transmission that will not go into drive can be caused by a few different things. A few common causes are a failed ignition lock cylinder, stoplight switch, or transmission issues. The ignition lock cylinder and stoplight switch are...

Q: The front left tire tilted inward after I replaced the Sway Bar

As is the case with most vehicles, the preferred camber setting on the front wheels of the 2007 Prius is slightly negative, that is the top of the tire is tilted inward as you are observing and describing. However, the...

Q: My car is moving the Ac get cold if I stop the signal or park the Ac get hot

This is a classic symptom is very common. Most likely the cooling fan for the condenser is not turning on allowing the high side of the A/C system to get to hot. This reduces the cooling capacity of your system....

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.